mirror of https://gitee.com/openkylin/linux.git
drm/todo: Add levels
Should help new people pick suitable tasks. Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Sean Paul <sean@poorly.run> Reviewed-by: Sean Paul <sean@poorly.run> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191022152530.22038-2-daniel.vetter@ffwll.ch
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Daniel Vetter
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@ -7,6 +7,22 @@ TODO list
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This section contains a list of smaller janitorial tasks in the kernel DRM
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graphics subsystem useful as newbie projects. Or for slow rainy days.
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Difficulty
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----------
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To make it easier task are categorized into different levels:
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Starter: Good tasks to get started with the DRM subsystem.
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Intermediate: Tasks which need some experience with working in the DRM
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subsystem, or some specific GPU/display graphics knowledge. For debugging issue
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it's good to have the relevant hardware (or a virtual driver set up) available
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for testing.
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Advanced: Tricky tasks that need fairly good understanding of the DRM subsystem
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and graphics topics. Generally need the relevant hardware for development and
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testing.
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Subsystem-wide refactorings
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===========================
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@ -20,6 +36,8 @@ implementations), and then remove it.
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Contact: Daniel Vetter, respective driver maintainers
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Level: Intermediate
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Convert existing KMS drivers to atomic modesetting
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--------------------------------------------------
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@ -38,6 +56,8 @@ do by directly using the new atomic helper driver callbacks.
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Contact: Daniel Vetter, respective driver maintainers
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Level: Advanced
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Clean up the clipped coordination confusion around planes
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---------------------------------------------------------
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@ -50,6 +70,8 @@ helpers.
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Contact: Ville Syrjälä, Daniel Vetter, driver maintainers
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Level: Advanced
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Convert early atomic drivers to async commit helpers
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----------------------------------------------------
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@ -63,6 +85,8 @@ events for atomic commits correctly. But fixing these bugs is good anyway.
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Contact: Daniel Vetter, respective driver maintainers
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Level: Advanced
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Fallout from atomic KMS
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-----------------------
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@ -91,6 +115,8 @@ interfaces to fix these issues:
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Contact: Daniel Vetter
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Level: Intermediate
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Get rid of dev->struct_mutex from GEM drivers
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---------------------------------------------
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@ -114,6 +140,8 @@ fine-grained per-buffer object and per-context lockings scheme. Currently only t
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Contact: Daniel Vetter, respective driver maintainers
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Level: Advanced
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Convert instances of dev_info/dev_err/dev_warn to their DRM_DEV_* equivalent
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----------------------------------------------------------------------------
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@ -129,6 +157,8 @@ are better.
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Contact: Sean Paul, Maintainer of the driver you plan to convert
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Level: Starter
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Convert drivers to use simple modeset suspend/resume
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----------------------------------------------------
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@ -139,6 +169,8 @@ of the atomic suspend/resume code in older atomic modeset drivers.
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Contact: Maintainer of the driver you plan to convert
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Level: Intermediate
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Convert drivers to use drm_fb_helper_fbdev_setup/teardown()
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-----------------------------------------------------------
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@ -157,6 +189,8 @@ probably use drm_fb_helper_fbdev_teardown().
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Contact: Maintainer of the driver you plan to convert
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Level: Intermediate
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Clean up mmap forwarding
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------------------------
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@ -166,6 +200,8 @@ There's drm_gem_prime_mmap() for this now, but still needs to be rolled out.
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Contact: Daniel Vetter
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Level: Intermediate
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Generic fbdev defio support
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---------------------------
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@ -196,6 +232,8 @@ Might be good to also have some igt testcases for this.
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Contact: Daniel Vetter, Noralf Tronnes
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Level: Advanced
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idr_init_base()
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---------------
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@ -206,6 +244,8 @@ efficient.
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Contact: Daniel Vetter
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Level: Starter
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struct drm_gem_object_funcs
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---------------------------
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@ -216,6 +256,8 @@ We also need a 2nd version of the CMA define that doesn't require the
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vmapping to be present (different hook for prime importing). Plus this needs to
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be rolled out to all drivers using their own implementations, too.
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Level: Intermediate
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Use DRM_MODESET_LOCK_ALL_* helpers instead of boilerplate
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---------------------------------------------------------
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@ -231,6 +273,8 @@ As a reference, take a look at the conversions already completed in drm core.
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Contact: Sean Paul, respective driver maintainers
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Level: Starter
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Rename CMA helpers to DMA helpers
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---------------------------------
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@ -241,6 +285,9 @@ no one knows what that means) since underneath they just use dma_alloc_coherent.
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Contact: Laurent Pinchart, Daniel Vetter
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Level: Intermediate (mostly because it is a huge tasks without good partial
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milestones, not technically itself that challenging)
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Convert direct mode.vrefresh accesses to use drm_mode_vrefresh()
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----------------------------------------------------------------
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@ -259,6 +306,8 @@ drm_display_mode to avoid future use.
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Contact: Sean Paul
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Level: Starter
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Remove drm_display_mode.hsync
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-----------------------------
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@ -269,6 +318,8 @@ it to use drm_mode_hsync() instead.
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Contact: Sean Paul
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Level: Starter
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drm_fb_helper tasks
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-------------------
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@ -284,6 +335,8 @@ drm_fb_helper tasks
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removed: drm_fb_helper_single_add_all_connectors(),
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drm_fb_helper_add_one_connector() and drm_fb_helper_remove_one_connector().
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Level: Intermediate
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connector register/unregister fixes
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-----------------------------------
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@ -296,6 +349,8 @@ connector register/unregister fixes
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drm_dp_aux_init, and moving the actual registering into a late_register
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callback as recommended in the kerneldoc.
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Level: Intermediate
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Core refactorings
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=================
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@ -338,6 +393,8 @@ This is a really varied tasks with lots of little bits and pieces:
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Contact: Daniel Vetter
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Level: Advanced
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Clean up the debugfs support
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----------------------------
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@ -367,6 +424,8 @@ There's a bunch of issues with it:
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Contact: Daniel Vetter
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Level: Intermediate
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KMS cleanups
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------------
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@ -382,6 +441,8 @@ Some of these date from the very introduction of KMS in 2008 ...
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end, for which we could add drm_*_cleanup_kfree(). And then there's the (for
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historical reasons) misnamed drm_primary_helper_destroy() function.
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Level: Intermediate
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Better Testing
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==============
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@ -390,6 +451,8 @@ Enable trinity for DRM
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And fix up the fallout. Should be really interesting ...
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Level: Advanced
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Make KMS tests in i-g-t generic
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-------------------------------
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@ -403,6 +466,8 @@ converting things over. For modeset tests we also first need a bit of
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infrastructure to use dumb buffers for untiled buffers, to be able to run all
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the non-i915 specific modeset tests.
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Level: Advanced
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Extend virtual test driver (VKMS)
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---------------------------------
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@ -412,6 +477,8 @@ fit the available time.
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Contact: Daniel Vetter
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Level: See details
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Backlight Refactoring
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---------------------
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@ -425,6 +492,8 @@ Plan to fix this:
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Contact: Daniel Vetter
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Level: Intermediate
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Driver Specific
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===============
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@ -453,6 +522,8 @@ for fbdev.
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Contact: Sam Ravnborg
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Level: Advanced
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Outside DRM
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===========
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@ -482,3 +553,5 @@ and Weston.
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- [2] https://gitlab.freedesktop.org/tzimmermann/linux/blob/fbconv/drivers/gpu/drm/drm_fbconv_helper.c
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Contact: Thomas Zimmermann <tzimmermann@suse.de>
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Level: Advanced
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